How to use this book: a guided tour Annotated exemplar answer – a question with a sample answer plus examiners’ comments about what was good and what could be improved. An excellent way to see how to snap up extra marks.
Worked examples – a step by step approach to answering exam-style questions, guiding you through from start to finish.
The size of the hydrogen atom gives an estimate of the uncertainty in the position of the electron.
Hints – quick suggestions to remind you about key facts and highlight important points.
Test yourself questions – check your own knowledge and see how well you’re getting on by answering questions.
Nature of Science – these discuss particular concepts or discoveries from the points of view of one or more aspects of Nature of Science.
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